Grain-drying apparatus.



PRINCE ELIAS DJANDIERI & SERGEI SHAPOW GRAIN DRYING APPARATUS.

APPLICATION FILED JULY 21,1915.

1,1 60,058. Patented NOV. 9, 1915.

r Illln cuLuAusm FLANOGRAPH CO., WASHINGTON, n. c.

1* wet GRAIN-DRYING APPARATUS.

Application filed July 21, 1915.

than those hitherto known and which provents damage to the grain itself.

Ifv gram 1s drled in air at ordinary pressure much time and heat is wasted in get ting the moisture out of the grain Further, if the grain is not stirred itbecomes lumpy and if lying on the heated surface it becomes burnt.

In order to obtain a dried grain free of the defects above mentioned it is necessary to maintain the following conditions :(1) The grain must be dried in rarefied air, (2)

the grain must be kept in motion during the process of drying, and (3) the grain must not come in contact with the heated parts of the drying apparatus. The first condition will save time and heat since the water contained in the grain is evaporated in the rarefied air at a lower temperature and at a far greater speed than in the open air. The second condition avoids the forming of lumps, and besides this enlarges the surface of evaporation, thus accelerating the process of evaporation, and, finally the third condition prevents the grain burning.

This invention provides a grain drying apparatus complying with all conditions just considered, and the accompanying diagrammatic drawing illustrates one convenient form of our invention.

Figure 1 shows a side elevation of the apparatus, Fig. 2 a cross sectional view, and Fig. 3 a plan view with the cover removed.

The apparatus consists of a vertical metallic cylinder A, the bottom cover 0 and top cover I) of which have a dished form. The cylinder A is preferably covered by a heatinsulating material. A horizontal shaft D which is carried on suitable bearings and may be rotated by means of any convenient gearing mechanism, is provided with a rotating cage having a form consisting of two pyramids or cones joined together at their bases. The sides of the pyramids or cones consist of a rigid frame-work covered by Specification of Letters Patent.

PatentedNov. 9, 1915.

Serial No. 41,164.

netting which maybe removedfor cleaning purposes. The grain passes into and is discharged from the rotating cage through valves F. The spokesv Gr (see Fig. 3) are fixed to the shaft D within the rotating cage, and. serve for supporting the framework as well as for stirring the grain to be dried.

The. cover Z) of the cylinder A is provided with a valve it through which the grain is passed into the rotating cage E from the delivery pipe 1', while the dischar e from. the rotating cage is ell'ected through a pipe K provided with av valve 7' and projecting through the bottom of the cylinder A. All valves are preferably of the flap type.

The radiators or heating coils M are ranged in: the cylinder A around the rotating cage E, and are fed with steam from a boiler a through a pipe U, the condensed water being discharged to the heater vV through a pipe V and thence to a tank T A pipe X leads from the bottom of the cylinder A to the top of a cooling device P, the lower part of which is connected with a. vacuum apparatus 1. The cooling device P and the vacuum apparatus are preferably cooled by Water which is led in through a pipe 7', such water, after passing through these devices as indicated by the arrows on the drawing, being discharged into the tank T.

When the damp air is drawn 01f from the cylinder A through the cooler P by the vacuum apparatus Q the moisture is condensed and settles in the bottom of the device P. From there it is discharged into the tank T by a pump S.

The heater \V is provided with a pipe Y at its lower end through which air may be admitted, such air passing out at the top into a pipe Z after having been heated by the condensed Water passing downwardly through the heater W. Such water is kept out of contact with the air in the well known manner.

The apparatus is employed as follows The cage E is about half filled with the grain to be treated through the valves h and F and is then rotated, steam during this time being passed through the heating coils M to maintain a steady heat radiation on to the grain. When the grain is sufficiently warmed, or during the warming process, the vacuum apparatus 9 is caused to draw off through the valves F and j and the pipe K.

What we claim is r 1. Grain drying apparatus comprising a closed chamber, heating devices arranged around the interior of said'chamber, a rotatable perforated cage surrounded by said heating devices, means for inserting grain into said cage through the top of said chamber, means for discharging grain from said cage through the lower end of said chamber, and means for rarefying the air in and drawing off vapor from said chamber.

2. Grain drying apparatus comprising a closed chamber, heating devices arranged around the interior of said chamber, a rotatable perforated cage surrounded by said heating devices, means for inserting grain into, and removing it from, said cage, means for drawing air and vapor from said chamber, and means for passing warm air through the chamber.

Copies of this patent may be obtained for l.- Grain drying apparatus comprising a 7 closed chamber, heating devices arranged around the interlor of sald chamber, a rotatable perforated cage surrounded by 'SitlCl heating devices,said cage consisting of two pyramidal sections connected at their bases, a shaft on which said sections are mounted, spokes connecting said sections to said shaft to act as stirrers, means for inserting grain into, and removing it from, said cage, and means for rarefying the air in and drawing off vapor fromsaid chamber.

In testimony whereof we. affix our signatures in presence of two witnesses.

PRINCE ELIAS DJANDIERI, AGRIOULTOR. SERGEI SHAPOW, ENGlNEER.

'VVitnesses H. A. LOVIAGUIRE, M. LUISAREURO.

five cents each, by addressing the Commissioner of Patents.

Washington, D. C. 

